From 5c8e72a733338667f0c79b800c8690b2124a5668 Mon Sep 17 00:00:00 2001
From: EliasSchriefer <elischriefer@gmail.com>
Date: Tue, 16 Nov 2021 23:49:43 +0100
Subject: [PATCH] Fix array formatting for SQL

---
 src/graphql.rs | 27 +++++++++++++++------------
 1 file changed, 15 insertions(+), 12 deletions(-)

diff --git a/src/graphql.rs b/src/graphql.rs
index 11eaad1..bc80988 100644
--- a/src/graphql.rs
+++ b/src/graphql.rs
@@ -79,21 +79,24 @@ where
 }
 
 #[inline]
-fn format_array_for_sql<T>(values: &[T]) -> String
+fn format_array_for_sql<I, T>(values: I) -> String
 where
-    T: Display
+    I: IntoIterator<Item=T>,
+    T: Display,
 {
-    match values.len() {
-        1.. => {
-            let mut output = values[0].to_string();
-            for v in &values[1..] {
-                output += ",";
-                output += &v.to_string();
-            }
-            output
-        },
-        _ => values.first().map(|v| v.to_string()).unwrap_or(String::new()),
+    let mut iter = values.into_iter();
+
+    let mut output = match iter.next() {
+        Some(first) => first.to_string(),
+        None => return String::new(),
+    };
+
+    for v in iter {
+        output += ",";
+        output += &v.to_string();
     }
+
+    output
 }
 
 #[inline]